Title :
Effect of calcia additions on the electromechanical properties of samarium-modified lead titanate ceramics
Author :
Xue, W.R. ; Lu, P.W. ; Huebner, W.
Author_Institution :
Nanjing Inst. of Chem. Technol., China
Abstract :
Modified lead titanate ceramics with a composition of (Pb0.88-xCaxSm0.08)(Ti0.98Mn 0.02)O3; x=0.11, 0.13, 0.15 and 0.17 were prepared. Simultaneous doping of samarium and calcium resulted in normal ferroelectric behavior, i.e. The dielectric properties changed in a manner typically associated with isovalent shifting of the Curie temperature. However, the unique attribute of this system appeared for the x=0.13 and 0.15 compositions, which exhibited kt´s ⩾57%
Keywords :
Q-factor; calcium compounds; ceramics; dielectric polarisation; electric breakdown; ferroelectric Curie temperature; ferroelectric materials; lead compounds; permittivity; piezoceramics; samarium compounds; ((PbCa)0.88Sm0.08)(Ti0.98Mn0.02)O 3; (Pb0.88-xCaxSm0.08)(Ti0.98Mn 0.02)O3; (PbCaSm)TiO3:Mn; Curie temperature isovalent shifting; calcia additions; dielectric properties; electromechanical properties; ferroelectric behavior; samarium-modified lead titanate ceramics; Anisotropic magnetoresistance; Ceramics; Density measurement; Dielectric measurements; Doping; Impedance measurement; Lead; Surface impedance; Temperature; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522308
